Shackle.



PATENTBD NOV. 12, 1907.

- W. G. EGGLETON.

SHAGKLH' APPLICATION nun) Arm-15. 1001.

UNITED sTA Es PATENT OFFICE;

WILLIAM G. EGGLETON, OF WATERBURY, CONNECTICUT, ASSIGNOR TO THEMATTATUCK MFG. 00., OF WATERBURY, CONNECTICUT, A CORPORATION.

SHACKLE Specification of Letters Patent.

Patented Nov. 12, 1907.

To all whom 1'1. may concern:

Be it known that 1, WILLIAM G. EGGLETON, a citizen of the United States,residing at Waterbury, in the county of New Haven and State ofConnecticut, have invented a new and useful Improvement in Shackles; andI do hereby declare the following, when taken in connection with theaccompanying drawings and the letters of reference marked thereon, to bea full, clear, and exact description of the same, and which saiddrawings constitute part of this specification, and represent, in

Figure 1 a top or plan view of a single shackle constructed inaccordance with my invention. Fig. 2 a top or plan view of the same withthe cap of the case removed, showing the arm in its locked position.Fig. 3 a similar view with the arm partially broken away and showing oneof the dogs locked in its retired position. Fig. 4 an edge view of oneof the dog-operating levers. Fig. 5 an edge view of the otherdog-operating lever.

This invention relates to an improvement in shackles, or, as they arecommonly called, hand cuffs and leg irons, the object of the inventionbeing to produce a shackle which is not only more secure againstpossibility of picking or accidental opening, but also locks the shacklearm against movement in either direction; and the invention consists inthe construction hereinafter described and particularly recited in theclaims.

The shackle consists of a body or case 2 closed by a cover or cap 3.Hinged to one end of the case is an arm 4 which arm is adapted to passthrough an opening 5 l'ormed for it in the opposite end of the case, thearm being provided with notches (5 and 7, the notches being arranged inpairs and turned in opposite directions. Mounted within the case upon apost 8 is a do 9 in position to engage with the notches (5 to preventthe withdrawal of the arm. This dog is held in its locking position by aspring 10 bearing against the tail 1] oi the dog. At the opposite sideof the case upon a post 12 is a second locking dog 13 which is adaptedto engage with the notches 7 in the arm, this dog being held in itsclosed position by a spring 14 hearing against the tail 15. Mounted upona stud or post 16 is a lever 17 having an inwardly projecting linger 18which engages with the tail 11 of the dog 9, and at the opposite endwith an inwardly projecting finger 19 which is engaged by a tumbler 20adapted to be moved by one of the bits of a key. Mounted upon the samepost 16 is a lever 21 having an upwardly extending linger 22 whichengages with the tail 15 of the dog 13, the opposite end of the leverextending into the path of the tumbler 23 which is turned by another bitof the key. The tumblers are mounted upon a post 24 and the inner end ofthe tumbler 23 has a pin 25 which is adapted to be engaged by a notch 26formed in a spring latch 27.

In the position shown by the parts in Fig. 2 of the drawings it will beseen that the dogs 9 and 13 engage with the notches 6 and 7 in the arm,and that arm is locked against movement in either direction, and when solocked one dog prevents access to the other dog so that it is diflicult,if not impossible, to move both dogs out of engagement with the rack soas to pick the lock. To open the lock, a key is turned to move thetumblers 20 and 23 which turn the levers 17 and 21 so as to force thefinger-s18 and 22 against the respective tails 11 and 15 of the dogs 9and 13 so as to turn those dogs out of the notches G and 7 leaving thearm free to be withdrawn. This turning of the tumblers brings the pin 25in position to be engaged by the notch 26 of the latch 27 as shown inFig. 3 of the drawings, so that the dog 13 is held in its unlockedposition even when the key is turned in position to be withdrawn fromthe case. The parts thus positioned as shown in Fig. 3 of the drawingspermits the arm to be moved into the case, and will be locked againstwithdrawal so that a key is not required to lock the shackle. After thearm is closed to the desired extent, the key is rotated in the oppositedirection to bring the bits against the latch 27 which is slightlyturned so as to release the pin 25 allowing the tumbler 23 to turn andthrow the dog 13 into its locking position so that both dogs are againengaged with the arm.

It will thus be seen that a shackle is produced which permits 01' itsattachment with the same convenience as previous shackles by having thetwo dogs as more positively locked against movement in either directionand the possibility of picking is reduced.

I claim:

1.. In a device of the class mentioned the combination with the casethereof, of an arm hinged thereto and formed with revcrsely arrangedlocking notches, a pair of spring dogs pivoted in the case and adaptedto engage with said notches, and means for turning said dogs.

2. In a device of the class mentioned, the combination with the casethereof, of an arm hinged thereto and formed with rcvel'sely arrangedlocking notches, a pair of spring dogs mounted in the case and adaptedto engage with said notches, a pair of lovers mounted in the case andrespeclively adapted to move said dogs, and means for turning saidlevers, substantially as described.

2;. In a device of the class mentioned, the combination with the casethereof, of an arm hinged thereto and formed with reversely arrangedlocking notches, a pair of spring dogs pivoted in the case and adaptedto engage with said notches, a pair of levers mounted in said case andrespec- 105 tively engaging with said dogs, and a pair of tumblersmounted in the case and respectively engaging with said levers,substantially as described.

4. In a device of the class mentioned, the combination 5 with the casethereof, of an arm hinged thereto and formed with reversely arrangedlocking notches, a pair of spring dogs pivoted in the case and adaptedto engage with said notches, a pair of levers mounted in the case andadapted respectively to engage with said dogs, a pair of tumblers 10mounted in said case and adapted to engage with said 1e vers, one ofsaid tumblers provided with a pin, and a spring latch adapted to engagewith said pin whereby one of said dogs may be held out of engagementwith said arm, substantially as described.

In testimony whereof, I have signed this specification in 15 thepresence of two subscribing witnesses.

WM. G. EGGLETON.

Witnesses:

CHARLES E. PUFFER,

Gno. E. JUDD.

